The widespread use of composite materials in the creation of new generation aircraft is one of the main trends in the aviation industry. Composites can be used to manufacture the fuselage, wings, tail and other elements of the aircraft, which reduces its weight and increases strength. However, nothing is perfect: over time, the mechanical and strength properties of composite materials deteriorate, which is associated with the accumulation of damage during operation. It is extremely important to calculate exactly how this process takes place in order to increase the resource of aviation products.
Materials that change their properties in response to certain stimuli can occupy a valuable niche in many fields, from robotics to medicine and modern aircraft. A new example of such a shape-shifting technology was presented in the form of an imitation of ancient chain mail armor, which allows you to quickly switch from a flexible version to a rigid one due to the features of the material.
A material based on europium (Eu III) ions with light antennas in the form of special molecules intensively absorbs and emits light. It can become the basis of a wide range of other compounds-light converters. Some of them can be used to increase the efficiency of solar panels, others can be used as additives to solid materials in order to visually observe the places of the greatest stress of the material under loads, for example, to determine with high accuracy the presence of microcracks on aircraft wings or in other details.
The number 8 is the atomic number of oxygen and the number of planets in the Solar System. This is the number of legs in arachnids, vertices in a cube and faces in an octahedron. And 8 is also a magical date, because before every March 8, the guys frantically Google the best gift for their beloved and how the enchanted sweep away flowers, jewelry and other trinkets in stores. Don't be like everyone else, be cooler, and the PM will help you with this: urgently read our selection and keep it in mind.
The paper airplanes that you may have used in literature lessons appeared much earlier than the real ones. We will tell you how it happened.
An earthquake is one of the most devastating natural disasters. Even if you have never encountered it, you probably know about its manifestations and consequences. An earthquake is an aftershock that knocks books off shelves, shakes trees, and sometimes even destroys entire buildings. But what if it starts right below you while you're on a plane? Will the tremors reach the plane, and will you somehow feel the seismic waves?
German engineers Arthur and Eliot Kreitenberg were not taken seriously for a long time, but the COVID-19 pandemic made them successful and famous.
The fear of the number 13 has a scientific term — triskaydekaphobia. Is it really an ordinary number that is just unlucky, or is there some kind of magical force behind it that attracts trouble? Are those right who are afraid of the 13th row on the plane, a ride in the elevator to the 13th floor, parking space number 13 and 13 guests at their birthday party, or is it time for them to see a therapist? We have picked up interesting facts about the damn dozen, and you will already draw conclusions.
In 2012, several English and American TV channels organized an incredibly expensive and complex experiment conducted by a team of scientists and experienced pilots in the Mexican Sonora desert. No one has done this before or since. In short, the researchers literally rigidly planted a fully operational Boeing 727.
Being the most massive aircraft in the world is not an easy burden. On the one hand, beautiful figures worthy of the Guinness Book of Records, on the other — sad statistics of the largest number of accidents. A Boeing 737 takes off or lands about every second and a half, and right now there are almost three thousand of these planes in the air. For almost 52 years of seven-three-seven flights, 215 boards of various modifications were lost, 115 attempts were made to hijack it, and the total number of victims at the moment was 5,562 people. We have selected five of the largest disasters of the 737th in terms of the number of deaths.